Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0CDB callsign genealogy
Currently held by BAUM, CHARLES D
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W0CDB's current licensee, walking backwards.
- BAUM, CHARLES DCOgranted 2014-12-05cancelled 2019-12-20
Successor callsigns
Callsigns held now by people who previously held W0CDB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0CDB, oldest first.
- SMITH, JACK D TX1992-01-28 → cancelled 2004-01-29
- BRYANT, CHARLES D MO2006-04-08 → cancelled 2018-04-10
- BAUM, CHARLES D CO2019-12-20 active